Annoyed am i in the wrong???

Okay so my boyfriend of 4 years parents smoke weed, they smoke with their door closed we are living with them until our house is ready I have a 8 year old boy and a 1 year old girl you can clearly smell the damn weed and my boyfriend lets both my kids go into the room to hang out with his parents after they were just smoking smh I got mad and told him you can clearly smell the weed and he's like they weren't smoking I'm like seriously I know what weed smells like, like nasty shit! I'm just annoyed cause it's like I have no fucking say I don't want my kids around that shit or even around the smoke just not that type of parent! But he still let them go in there with them I'm so pissed I'm 34 weeks and I can smell it bad and I hate it like I know it's there house but can't they go outside knowing I'm pregnant and have kids in the house.